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Finding the Fourth Proportional to 121,058.80, 181,588.20 and 93,032.80

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Solution

The fourth proportional to 121,058.80, 181,588.20 and 93,032.80 is: 139,549.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,058.80 : 181,588.20 = 93,032.80 : x
  2. Step 2: Convert to fraction form
    121,058.80/181,588.20 = 93,032.80/x
  3. Step 3: Cross multiply
    121,058.80x = 181,588.20 × 93,032.80
  4. Step 4: Simplify right side
    121,058.80x = 16,893,658,692.96
  5. Step 5: Solve for x
    x = 16,893,658,692.96/121,058.80
  6. Step 6: Final answer
    x = 139,549.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.